US president formally launches 2020 re-election bid

US president, Donald Trump has formally launched his re-election campaign.

The republican president made the declaration before thousands of supporters at a rally in Florida.

Mr Trump used the announcement to lash out at democrats, accusing them of trying to rip the country apart.

Early polls place Mr Trump behind some potential democratic challengers.

Senior figures from the white house, including vice president Mike Pence and outgoing press secretary Sarah Sanders, also spoke at the rally.